CVE-2016-8688

Gentoo Linux Security Advisory 201701-03

Severity Score

5.5

*CVSS v3

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

*Multiple Sources

Exploited in Wild

*KEV

Decision

*SSVC

Descriptions

The mtree bidder in libarchive 3.2.1 does not keep track of line sizes when extending the read-ahead, which allows remote attackers to cause a denial of service (crash) via a crafted file, which triggers an invalid read in the (1) detect_form or (2) bid_entry function in libarchive/archive_read_support_format_mtree.c.

El licitador mtree en libarchive 3.2.1 no realiza un seguimiento de los tamaños de línea cuando amplía la lectura anticipada, lo que permite a atacantes remotos provocar una denegación de servicio (caída) a través de un archivo manipulado, lo que desencadena una lectura inválida en la función (1) detect_form o (2) bid_entry en libarchive/archive_read_support_format_mtree.c.

It was discovered that libarchive incorrectly handled hardlink entries when extracting archives. A remote attacker could possibly use this issue to overwrite arbitrary files. Christian Wressnegger, Alwin Maier, and Fabian Yamaguchi discovered that libarchive incorrectly handled filename lengths when writing ISO9660 archives. A remote attacker could use this issue to cause libarchive to crash, resulting in a denial of service, or possibly execute arbitrary code. This issue only applied to Ubuntu 12.04 LTS, Ubuntu 14.04 LTS and Ubuntu 16.04 LTS. Various other issues were also addressed.

*Credits: N/A

Attack Vector

Local

Attack Complexity

Low

Privileges Required

None

User Interaction

Required

Scope

Unchanged

Confidentiality

None

Integrity

None

Availability

High

Attack Vector

Network

Attack Complexity

Medium

Authentication

None

Confidentiality

None

Integrity

None

Availability

Partial

* Common Vulnerability Scoring System

SSVC

Decision:-

Exploitation

Automatable

Tech. Impact

* Organization's Worst-case Scenario

Timeline

2016-10-15 CVE Reserved
2017-01-02 CVE Published
2024-08-06 CVE Updated
2025-03-30 EPSS Updated
---------- Exploited in Wild
---------- KEV Due Date
---------- First Exploit

CWE

CWE-125: Out-of-bounds Read

CAPEC

References (12)

URL	Tag	Source
http://www.securityfocus.com/bid/93781	Third Party Advisory
https://lists.debian.org/debian-lts-announce/2018/11/msg00037.html	Mailing List

URL	Date	SRC

URL	Date	SRC
http://www.openwall.com/lists/oss-security/2016/10/16/11	2018-11-30
https://blogs.gentoo.org/ago/2016/09/11/libarchive-bsdtar-heap-based-buffer-overflow-in-bid_entry-archive_read_support_format_mtree-c	2018-11-30
https://blogs.gentoo.org/ago/2016/09/11/libarchive-bsdtar-heap-based-buffer-overflow-in-detect_form-archive_read_support_format_mtree-c	2018-11-30
https://blogs.gentoo.org/ago/2016/09/11/libarchive-bsdtar-memory-corruptionunknown-crash-in-bid_entry-archive_read_support_format_mtree-c	2018-11-30
https://blogs.gentoo.org/ago/2016/09/11/libarchive-bsdtar-use-after-free-in-bid_entry-archive_read_support_format_mtree-c	2018-11-30
https://blogs.gentoo.org/ago/2016/09/11/libarchive-bsdtar-use-after-free-in-detect_form-archive_read_support_format_mtree-c	2018-11-30
https://bugzilla.redhat.com/show_bug.cgi?id=1377923	2018-11-30
https://github.com/libarchive/libarchive/commit/eec077f52bfa2d3f7103b4b74d52572ba8a15aca	2018-11-30
https://security.gentoo.org/glsa/201701-03	2018-11-30

URL	Date	SRC
http://lists.opensuse.org/opensuse-updates/2016-12/msg00027.html	2018-11-30

Affected Vendors, Products, and Versions

Vendor		Product				Version		Other		Status
Vendor	Product	Version	Other	Status	<-- -->	Vendor	Product	Version	Other	Status
Libarchive Search vendor "Libarchive"		Libarchive Search vendor "Libarchive" for product "Libarchive"				3.2.1 Search vendor "Libarchive" for product "Libarchive" and version "3.2.1"		-		Affected
Opensuse Search vendor "Opensuse"		Leap Search vendor "Opensuse" for product "Leap"				42.2 Search vendor "Opensuse" for product "Leap" and version "42.2"		-		Affected